Getting cut off in mid conversation

I was getting cut off mid call. Seems to be on incoming calls. I got "connection problem or invalid mmi. I'm thinking it was when I answered the phone after quite a few rings. I'd get the recording to enter my pin or something for voicemail. ? Is it possible it went to voicemail AS I was talking? I think I'd like to try setting my phone for more rings but can't find where ....HELP!

What phone do you have? If you're getting cut off mid phone call, you can always try power cycling your phone (turning it off and back on) and removing the sim card for about 30 seconds. If you still have that issue with calls you may have to test another sim card in your phone (make sure it is a Koodo sim card). When it comes to the amount of rings your phone does before it goes to voicemail is system related to Koodo, you can't change that setting in your phone to make it ring more times, the only thing I can suggest is possibly changing your ring tone so that it can be heard more clearly.